Question

calcule X sabendo que os ângulos são complementares:​

Answer 1

A soma tem que dá 90°.

$\mathsf{\dfrac{3x}{4}+x-50^{\circ}=90^{\circ}\cdot(4)}\\\mathsf{3x+4x-200^{\circ}=360^{\circ}}\\\mathsf{7x=360^{\circ}+200^{\circ}}\\\mathsf{7x=560}\\\mathsf{x=\dfrac{560}{7}}\\\huge\boxed{\boxed{\boxed{\boxed{\mathsf{x=80^{\circ}}}}}}$